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'\" te .\" Copyright (c) 2001, The IEEE and The Open Group. All rights reserved. Portions Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. .\" Oracle gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at http://www.opengroup.org/bookstore/. .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html. This notice shall appear on any product containing this material. .TH regex.h 3HEAD "9 Sep 2004" "Oracle Solaris 11.4" "Headers" .SH NAME regex.h, regex \- regular expression matching types .SH SYNOPSIS .LP .nf #include <\fBregex.h\fR> .fi .SH DESCRIPTION .sp .LP The <\fBregex.h\fR> header defines the structures and symbolic constants used by the \fBregcomp()\fR, \fBregexec()\fR, \fBregerror()\fR, and \fBregfree()\fR functions. See \fBregcomp\fR(3C). .sp .LP The structure type \fBregex_t\fR contains the following member: .sp .in +2 .nf size_t re_nsub number of parenthesized subexpressions .fi .in -2 .sp .sp .LP The type \fBsize_t\fR is defined as described in <\fBsys/types.h\fR>. See \fBtypes.h\fR(3HEAD). .sp .LP The type \fBregoff_t\fR is defined as a signed integer type that can hold the largest value that can be stored in either a type \fBoff_t\fR or type \fBssize_t\fR. The structure type \fBregmatch_t\fR contains the following members: .sp .in +2 .nf regoff_t rm_so byte offset from start of string to start of substring regoff_t rm_eo byte offset from start of string of the first character after the end of substring .fi .in -2 .sp .sp .LP Values for the \fIcflags\fR parameter to the \fBregcomp\fR function are as follows: .sp .ne 2 .mk .na \fB\fBREG_EXTENDED\fR\fR .ad .RS 16n .rt use extended regular expressions .RE .sp .ne 2 .mk .na \fB\fBREG_ICASE\fR\fR .ad .RS 16n .rt ignore case in match .RE .sp .ne 2 .mk .na \fB\fBREG_NOSUB\fR\fR .ad .RS 16n .rt report only success or fail in \fBregexec()\fR .RE .sp .ne 2 .mk .na \fB\fBREG_NEWLINE\fR\fR .ad .RS 16n .rt change the handling of \fBNEWLINE\fR character .RE .sp .LP Values for the \fIeflags\fR parameter to the \fBregexec()\fR function are as follows: .sp .ne 2 .mk .na \fB\fBREG_NOTBOL\fR\fR .ad .RS 14n .rt The circumflex character (^), when taken as a special character, does not match the beginning of string. .RE .sp .ne 2 .mk .na \fB\fBREG_NOTEOL\fR\fR .ad .RS 14n .rt The dollar sign ($), when taken as a special character, does not match the end of string. .RE .sp .LP The following constants are defined as error return values: .sp .ne 2 .mk .na \fB\fBREG_NOMATCH\fR\fR .ad .RS 16n .rt \fBregexec()\fR failed to match. .RE .sp .ne 2 .mk .na \fB\fBREG_BADPAT\fR\fR .ad .RS 16n .rt Invalid regular expression. .RE .sp .ne 2 .mk .na \fB\fBREG_ECOLLATE\fR\fR .ad .RS 16n .rt Invalid collating element referenced. .RE .sp .ne 2 .mk .na \fB\fBREG_ECTYPE\fR\fR .ad .RS 16n .rt Invalid character class type referenced. .RE .sp .ne 2 .mk .na \fB\fBREG_EESCAPE\fR\fR .ad .RS 16n .rt Trailing '\e' in pattern. .RE .sp .ne 2 .mk .na \fB\fBREG_ESUBREG\fR\fR .ad .RS 16n .rt Number in \e\fIdigit\fR invalid or in error. .RE .sp .ne 2 .mk .na \fB\fBREG_EBRACK\fR\fR .ad .RS 16n .rt "[]" imbalance. .RE .sp .ne 2 .mk .na \fB\fBREG_EPAREN\fR\fR .ad .RS 16n .rt "\e(\e)" or "()" imbalance. .RE .sp .ne 2 .mk .na \fB\fBREG_EBRACE\fR\fR .ad .RS 16n .rt "\e{\e}" imbalance. .RE .sp .ne 2 .mk .na \fB\fBREG_BADBR\fR\fR .ad .RS 16n .rt Content of "\e{\e}" invalid: not a number, number too large, more than two numbers, first larger than second. .RE .sp .ne 2 .mk .na \fB\fBREG_ERANGE\fR\fR .ad .RS 16n .rt Invalid endpoint in range expression. .RE .sp .ne 2 .mk .na \fB\fBREG_ESPACE\fR\fR .ad .RS 16n .rt Out of memory. .RE .sp .ne 2 .mk .na \fB\fBREG_BADRPT\fR\fR .ad .RS 16n .rt \'?', '*', or '+' not preceded by valid regular expression. .RE .sp .ne 2 .mk .na \fB\fBREG_ENOSYS\fR\fR .ad .RS 16n .rt Reserved. .RE .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .sp .TS tab( ) box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Interface Stability Committed _ Standard See \fBstandards\fR(7). .TE .sp .SH SEE ALSO .sp .LP \fBregcomp\fR(3C), \fBtypes.h\fR(3HEAD), \fBattributes\fR(7), \fBstandards\fR(7)